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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-22 02:40:46 +0300 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-23 06:52:09 +0300 |
| commit | 036876fa56204ae0fa59045bd6bbb2691a060633 (patch) | |
| tree | fd0b860445d7aff7d0ed6a601a78b7ec2e6699c1 | |
| parent | b6b2735514bcd70ad1556a33892a636b20ece671 (diff) | |
| download | linux-036876fa56204ae0fa59045bd6bbb2691a060633.tar.xz | |
tracing: Have the historgram use the result of str_has_prefix() for len of prefix
As str_has_prefix() returns the length on match, we can use that for the
updating of the string pointer instead of recalculating the prefix size.
Cc: Tom Zanussi <zanussi@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 0d878dcd1e4b..449d90cfa151 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -4342,12 +4342,13 @@ static int parse_actions(struct hist_trigger_data *hist_data) unsigned int i; int ret = 0; char *str; + int len; for (i = 0; i < hist_data->attrs->n_actions; i++) { str = hist_data->attrs->action_str[i]; - if (str_has_prefix(str, "onmatch(")) { - char *action_str = str + sizeof("onmatch(") - 1; + if ((len = str_has_prefix(str, "onmatch("))) { + char *action_str = str + len; data = onmatch_parse(tr, action_str); if (IS_ERR(data)) { @@ -4355,8 +4356,8 @@ static int parse_actions(struct hist_trigger_data *hist_data) break; } data->fn = action_trace; - } else if (str_has_prefix(str, "onmax(")) { - char *action_str = str + sizeof("onmax(") - 1; + } else if ((len = str_has_prefix(str, "onmax("))) { + char *action_str = str + len; data = onmax_parse(action_str); if (IS_ERR(data)) { |